Finding the Fourth Proportional to 839,808,698.80, 1,259,713,048.20 and 732,313,274.80
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Solution
The fourth proportional to 839,808,698.80, 1,259,713,048.20 and 732,313,274.80 is: 1,098,469,912.20
Step by Step Solution
- Step 1: Write the proportion equation
839,808,698.80 : 1,259,713,048.20 = 732,313,274.80 : x - Step 2: Convert to fraction form
839,808,698.80/1,259,713,048.20 = 732,313,274.80/x - Step 3: Cross multiply
839,808,698.80x = 1,259,713,048.20 × 732,313,274.80 - Step 4: Simplify right side
839,808,698.80x = 922,504,587,635,632,256 - Step 5: Solve for x
x = 922,504,587,635,632,256/839,808,698.80 - Step 6: Final answer
x = 1,098,469,912.20
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.